28888584 has 16 divisors (see below), whose sum is σ = 72221520. Its totient is φ = 9629520.

The previous prime is 28888577. The next prime is 28888619. The reversal of 28888584 is 48588882.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601822 + ... + 601869.

It is an arithmetic number, because the mean of its divisors is an integer number (4513845).

Almost surely, 2^28888584 is an apocalyptic number.

28888584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28888584 is an abundant number, since it is smaller than the sum of its proper divisors (43332936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28888584 is a wasteful number, since it uses less digits than its factorization.

28888584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203700 (or 1203696 counting only the distinct ones).

The product of its digits is 1310720, while the sum is 51.

The square root of 28888584 is about 5374.8101361816. The cubic root of 28888584 is about 306.8377233036.

The spelling of 28888584 in words is "twenty-eight million, eight hundred eighty-eight thousand, five hundred eighty-four".